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Subcritical extraction method capable of improving antioxidant activity of volatile oil in agarwood leaves

An oxidative activity, agarwood leaf technology, applied in the directions of essential oils/spices, fat generation, etc., can solve the problems of adverse effects of active substances, destruction of heat-sensitive components, low recovery rate, etc., achieves low scavenging activity, simplifies pretreatment steps, and recovers high rate effect

Active Publication Date: 2014-10-08
鹰潭中投科技有限公司
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Problems solved by technology

[0005] In order to overcome the problems of low recovery rate, many impurities, damage of heat-sensitive components caused by high temperature, solvent residues, and adverse effects on active substances in conventional steam distillation and organic solvent extraction, the invention provides a method for improving the concentration of agarwood leaves. Subcritical Extraction Method of Antioxidant Activity of Volatile Oil

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  • Subcritical extraction method capable of improving antioxidant activity of volatile oil in agarwood leaves

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Effect test

Embodiment 1

[0017] (1) Clean, dry and remove the branches of Agarwood leaves, then place them in a vacuum drying oven at 45°C to dry to a moisture content of 8%, then adjust the temperature of the vacuum drying oven to 105°C and dry to constant weight, and crush to obtain 80 Purpose Agarwood leaf powder;

[0018] (2) Take the agarwood leaf powder from step (1) and put it in the extraction kettle, and after compacting it, put glass wool balls on the top of the extraction kettle to prevent the blown agarwood leaf powder from clogging the pipeline. According to the ratio of material to liquid (unit: g / mL) at a ratio of 1:60, add deionized water, carry out subcritical extraction for 14min under the extraction power of 3.0MPa, let stand to cool and carry out suction filtration, then repeat the extraction of the residue once, combine the two extracts, and then reduce Concentrate under pressure to obtain concentrated solution;

[0019] (3) After the concentrated solution obtained in step (2) is...

Embodiment 2

[0022] (1) Clean, dry and remove the branches of Agarwood leaves, then place them in a vacuum drying oven at 44°C to dry to a moisture content of 5%, then adjust the temperature of the vacuum drying oven to 106°C and dry to constant weight, crush to obtain 60 Purpose Agarwood leaf powder;

[0023] (2) Take the agarwood leaf powder from step (1) and put it in the extraction kettle, and after compacting it, put glass wool balls on the top of the extraction kettle to prevent the blown agarwood leaf powder from clogging the pipeline. According to the ratio of material to liquid (unit: g / mL) at a ratio of 1:40, add deionized water, carry out subcritical extraction for 10 min at an extraction power of 2.0 MPa, let stand to cool and then perform suction filtration, then repeat the extraction of the residue once, combine the two extracts, and then reduce Concentrate under pressure to obtain concentrated solution;

[0024] (3) After the concentrated solution obtained in step (2) is co...

Embodiment 3

[0027] (1) Clean, dry and remove the branches of Agarwood leaves, then put them in a vacuum drying oven and dry them at 46°C until the moisture content is 10%, then adjust the temperature of the vacuum drying oven to 104°C and dry them to a constant weight, and crush them to obtain 100 Purpose Agarwood leaf powder;

[0028] (2) Take the agarwood leaf powder from step (1) and put it in the extraction kettle, and after compacting it, put glass wool balls on the top of the extraction kettle to prevent the blown agarwood leaf powder from clogging the pipeline. According to the ratio of material to liquid (unit: g / mL) at a ratio of 1:80, add deionized water, carry out subcritical extraction for 18min under the extraction power of 4.0MPa, let stand to cool and carry out suction filtration, then repeat the extraction of the residue once, combine the two extracts, and then reduce Concentrate under pressure to obtain concentrated solution;

[0029] (3) After the concentrated solution ...

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Abstract

The invention provides a subcritical extraction method capable of improving the antioxidant activity of volatile oil in agarwood leaves. The method comprises the following steps of cleaning agarwood leaves, drying and removing branches, and then baking to be almost absolute dry, and then baking to constant weight, pulverizing to obtain agarwood leaf powder, and then placing in the extraction vessel, adding deionized water, carrying out subcritical extraction, standing, cooling, carrying out suction filtration, and then extracting the residue once again, mixing the two extractive solutions, then concentrating under reduced pressure to obtain a concentrated solution, adding NaCl for demulsifying, extracting with ether, collecting the ether layer and then dehydrating collected ether layer with Na2SO4 and concentrating under reduced pressure to obtain agarwood leaf volatile oil. The obtained agarwood leaf volatile oil has antioxidant and immune function enhancing functions, anti-tumor activities and the like; compared with the traditional method, the method disclosed by the invention has more outstanding antioxidant effect. The method has the advantages of short extraction time, small solvent amount, high yield and low cost, takes non-toxic and harmless water as an extraction solvent and the processing of raw materials is simple.

Description

technical field [0001] The invention relates to a subcritical extraction method for improving the antioxidant activity of volatile oil in agarwood leaves, and belongs to the technical field of natural product extraction. Background technique [0002] As a commonly used medicine in traditional Chinese medicine, there are records of its source and function in various editions of the Pharmacopoeia of the People's Republic of China. It is mainly derived from the resin-containing Aquilaria sinensis (Lour.) Gilg wood. Agarwood has a fragrant smell, bitter taste, and slightly warm nature. It has the functions of promoting qi and relieving pain, warming the middle and relieving vomiting, and relieving qi and asthma. The leaves of Agarwood used to extract the volatile oil are the leaves of the Daphneaceae plant Agarwood. Modern research and analysis have confirmed that the leaves of Agarwood contain volatile oil, flavonoids and their glycosides, phenols, triterpenoids, polysaccharid...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 欧世春石铝怀
Owner 鹰潭中投科技有限公司
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